Area Code +81-578-(830000...839999) located in Hida (Kamioka), Gifu (21), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 578 Subscriber Number From : 830000 Subscriber Number To : 839999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : NTT West Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) Region Code : 21 Region Name : Gifu City : Hida (Kamioka) Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 36.2400 Longitude : 137.1900 ‹ previous : +81-578-(820000...829999) next › : +81-578-(840000...849999) Dialling Instructions For trunk calls: 0 578 830000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 578 830000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 830000 ~ 839999 (Count: 10,000) Example: +81-578-830000 / 01081-578-830000 (0578-830000 / 0-578-830000) +81-578-830001 / 01081-578-830001 (0578-830001 / 0-578-830001) +81-578-830002 / 01081-578-830002 (0578-830002 / 0-578-830002) +81-578-830003 / 01081-578-830003 (0578-830003 / 0-578-830003) +81-578-830004 / 01081-578-830004 (0578-830004 / 0-578-830004) ...+81-578-xxxxxx / 01081-578-xxxxxx (0578-xxxxxx / 0-578-xxxxxx) ...+81-578-839995 / 01081-578-839995 (0578-839995 / 0-578-839995) +81-578-839996 / 01081-578-839996 (0578-839996 / 0-578-839996) +81-578-839997 / 01081-578-839997 (0578-839997 / 0-578-839997) +81-578-839998 / 01081-578-839998 (0578-839998 / 0-578-839998) +81-578-839999 / 01081-578-839999 (0578-839999 / 0-578-839999)